120mm AIO is worse than a Hyper 212 EVO or Cryorig H7 or similar.
You have to get up to 240-280mm cooler to be marginally better, bare minimum would be the 100i. Once you start getting to top/front mount ones then case fitment becomes a factor.
I would put the 212 evo on it for now, and if it is not good enough than go to a 2 fan air setup from Cryorig or Noctua.
They will perform as well as an AIO, run quieter, and zero risk of a leak making for a very very bad day